Front Engine Running Lean

[TomM]

Here are the things I would check not knowing if this came on slowly or all of a sudden:
1. There is a strainer on the pickup tube in the sump in the wing boom. Mine was full of junk when I first got the plane, an is the first line of defense
2. The gascolator is plugging
3. mechanical fuel pump needs work/adjustment. Cessna has a really good guide on checking the pressures on this fuel system. I have my A and P follow it on every annual.

I would check the following:

1. make sure you get full fuel flow on the ground power and mixture full forward.
2. If not, check with the electric fuel pump on HIGH. The mechanical fuel pump has an internal bybass so that if it fails, the electric one can pump right through it and maintain full engine power.

That may help everyone understand a little more about the situation.

Keep us posted

[mshac]

Don't forget to check for intake leaks